IMHO I think it is ok to hate... but at whose expense? Remember how Christ cleared the temple of the money changers? It was a good reason to show intense displeasure, and included a "violent" action...yet didn't change Him at all.

Anger and hate are normal reactions to abuse. We're human. Once we recognize those reactions, then it's our responsibility to take care of ourselves and not let them rule us.

Please research anything I suggest before believing...